Name 3 challenges (problems to be solved) of the Progressive Era. Explain how one of those challenges was solved.

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.

if you have to make a general question and respond to your thoughts, then this isn't really a question someone can you on. read the passage, form your question, and answer using your thoughts. no one else can understand how you interpreted this text if you don't tell us.

answer; (b) knowledge based summaries of our beliefs and feeling about the self in particular domains;

answer; with few regulations protected the prices of crops which made farmers leave their farms and migrate to the big cities to work in factories;